On day six of the hunt for the missing Malaysia Airlines jetliner, the U.S. Navy is calling off one of two San Diego-based destroyers and redirecting the other to a new search area.

The Pinckney will head to Singapore for routine maintenance. The Navy’s U.S. Seventh Fleet said “with the search area expanding into the Strait of Malacca, Pinckney is not currently needed until follow-on information is available.”

The destroyer Kidd will head to the Strait of Malacca, the busy shipping route between the Malaysian peninsula and the Indonesian island of Sumatra, to continue the search. Travel time is expected to be a day or two.

News reports on Thursday say that the focus of the search is shifting to the vast Indian Ocean, particularly the Andaman Sea north of the Strait of Malacca.

The Navy will add a long-range search plane to the effort starting Saturday.

A P-8A Poseidon will join the P-3C Orion in daily flights. The move adds the P-8’s enhanced technology and greater range to the search efforts while maximizing planned maintenance and guarding against air crew fatigue for both aircraft, according to the Navy’s Seventh Fleet, headquartered in Yokosuska, Japan

For a mission such as the search for flight MH370, the P-8 will typically fly at 5,000 to 10,000 feet at 350 knots, with a search time of approximately 8 to 9 hours, depending on distance to the search area, the Navy said.